TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A neutron detector for which the cross-section of the detection reaction varies inversely with neutron speed.  1, record 1, English, - 1%2Fv%20detector

Record number: 1, Textual support number: 1 OBS

v: velocity.  2, record 1, English, - 1%2Fv%20detector

Record number: 1, Textual support number: 2 OBS

1/v detector: term and definition standardized by the International Organization for Standardization (ISO).  3, record 1, English, - 1%2Fv%20detector

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Détecteur de neutrons pour lequel la section efficace de la réaction de détection varie [inversement à] la vitesse des neutrons.  1, record 1, French, - d%C3%A9tecteur%20en%201%2Fv

Record number: 1, Textual support number: 1 OBS

v : vitesse.  2, record 1, French, - d%C3%A9tecteur%20en%201%2Fv

Record number: 1, Textual support number: 2 OBS

détecteur en 1/v : terme normalisé par l'Organisation internationale de normalisation (ISO).  3, record 1, French, - d%C3%A9tecteur%20en%201%2Fv

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A neutron detector for which the cross-section of the detection reaction varies inversely with neutron speed.  1, record 2, English, - 1%2Fv%20detector

Record number: 2, Textual support number: 1 OBS

1/v detector: term standardized by ISO.  2, record 2, English, - 1%2Fv%20detector

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Détecteur de neutrons pour lequel la section efficace de la réaction de détection varie comme l'inverse de la vitesse des neutrons.  1, record 2, French, - d%C3%A9tecteur%20en%201%2Fv

Record number: 2, Textual support number: 1 OBS

détecteur en 1/v : terme et définition normalisés par l'ISO.  2, record 2, French, - d%C3%A9tecteur%20en%201%2Fv

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

The Canadian Department of National Defence has developed a teleoperated, vehicle-mounted, multi-sensor system to detect anti-tank landmines on roads and tracks in peacekeeping operations. A key part of the system is a thermal neutron activation(TNA) sensor which is placed above a suspect location to within a 30 cm radius and confirms the presence of explosives via detection of the 10. 835 MeV [megaelectron volt] gamma ray associated with thermal neutron capture on N.  2, record 3, English, - thermal%20neutron%20activation%20sensor

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

... Thermal neutron activation(TNA) for buried explosives detection(simple depiction of the principal components and physical principals underlying the operation of TNA, including : fast neutron production using an electronic neutron generator, neutron thermalization, prompt gamma-ray production, and gamma-ray detection leading to material characterization....)  1, record 4, English, - thermal%20neutron%20activation

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

[...] L’activation à neutrons thermiques (TNA) pour la détection d’explosifs enfouis dans le sol (détection simple des principaux composants et éléments matériels sous-jacents au fonctionnement [de la] TNA, notamment : production de neutrons rapides à l’aide d’un générateur électronique de neutrons, thermalisation de neutrons, production de rayons gamma instantanés et détection de rayons gamma donnant lieu à une caractérisation du matériel. [...])  1, record 4, French, - activation%20%C3%A0%20neutrons%20thermiques

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

A series of measurements by neutron detection without and with a photon to neutron converter target were carried out … In this case no converter target is used; the neutron component is mainly produced by photonuclear interaction in the tungsten target itself. In order to enhance Mini Linatron neutron production an appropriate beryllium converter target was placed on the electron beam axis in front of the Mini Linatron and close to the tungsten-braking target. The beryllium target is a cylinder(12 cm high and 10 cm in diameter).  1, record 5, English, - converter%20target

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Des photoneutrons peuvent aussi provenir de la cible de freinage elle-même. En effet, les photons créés par décélération des électrons peuvent provoquer des réactions (gamma, n) au sein même de la cible de conversion. Par conséquent, le convertisseur électron-photon, hormis un nombre atomique élevé, nécessite un seuil photoneutronique élevé et une forme métallique stable.  1, record 5, French, - cible%20de%20conversion

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A neutron detection device based on the neutron-induced nuclear processes.  2, record 6, English, - neutron%20detector

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

A neutron flux measurement installation for liquid-cooled nuclear reactors comprising in combination a stationary neutron detection chamber beneath the reactor vessel containing the coolant liquid and the reactor core made up of vertically insertable fuel assemblies in juxtaposed relation, and a tubular enclosure containing an inert gas enclosure being vertically above the detection chamber and extending downwards from the reactor core to the immediate vicinity of the internal wall of reactor vessel, the tubular enclosure being removable and having within the reactor core an external shape corresponding to the shape of fuel assemblies and occupying a compartment defined by the adjacent fuel.  1, record 7, English, - detection%20chamber

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Mesure bêta. Le principe de piégeage pour la mesure des aérosols bêta est similaire à celui utilisé pour la capture des aérosols émetteurs alpha. Néanmoins, les particules bêta ont un parcours dans l’air beaucoup plus important pouvant atteindre plusieurs mètres pour certains émetteurs. Les phénomènes d’absorption dans le filtre et dans l’air séparant le filtre du détecteur ne sont donc pas autant cruciaux que dans le cas de la détection des particules alpha. En revanche, la détection des particules bêta est très sensible au rayonnement gamma, car ce dernier peut déclencher au niveau de la chambre de détection les mêmes phénomènes électriques qu’une particule bêta.  2, record 7, French, - chambre%20de%20d%C3%A9tection

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

A device used for the detection of spontaneous neutrons when the neutron source is not working, as well as the detection of fission neutrons emitted following a neutron burst originating from the source.  3, record 8, English, - detector%20block

Record number: 8, Textual support number: 1 OBS

Detector blocks are used mainly for the detection of fission materials.  3, record 8, English, - detector%20block

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

[En détection des matières fissiles,] dispositif [qui] permet la détection des neutrons spontanés lorsque la source de neutrons ne fonctionne pas ainsi que la détection des neutrons de fission émis après une bouffée de neutrons provenant de la source.  2, record 8, French, - bloc%20de%20d%C3%A9tection

Record number: 8, Textual support number: 1 CONT

Bloc de détection pour le comptage des neutrons prompts de fission lors d’une interrogation neutronique au moyen d’un générateur de neutrons.  3, record 8, French, - bloc%20de%20d%C3%A9tection

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

... a typical capture reaction [involves] a neutron being captured by the isotope boron-10. This [initiates] a nuclear reaction that [produces] a characteristic gamma ray which [can] be detected by... gamma radiation detection methods...  1, record 9, English, - capture%20reaction

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 OBS

Dans certains cas, les neutrons peuvent être capturées et induire une réaction nucléaire. Cette probabilité d'interaction s'exprime par une section efficace de capture [...] propre à chaque élément et fonction de l'énergie.  1, record 9, French, - r%C3%A9action%20de%20capture

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

Fission chambers... [These] counters [are] designed for the detection of neutrons by their interaction with a solid fissile material... Neutrons cause fission of the fissile material and the high energy ionising products of that reaction result, usually, in the output of pulses from the chamber. These chambers are known as pulse fission chambers since the rate of pulse output is proportional to the rate of fission reactions and, therefore, to the neutron flux.  1, record 10, English, - pulse%20fission%20chamber

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

Chambres à fission, en régime d'impulsions. Elles ont une sensibilité faible (comprise entre 0,1 et 4 cps/nv) et délivrent des impulsions de très faible amplitude. Leur intérêt réside dans la très faible influençabilité vis-à-vis des gamma. Elles peuvent supporter jusqu'à 10₄ Gy/h.  1, record 10, French, - chambre%20%C3%A0%20fission%20en%20r%C3%A9gime%20d%27impulsions

Record number: 10, Textual support number: 1 OBS

Gy=gray (the unit of absorbed dose of radiation).  2, record 10, French, - chambre%20%C3%A0%20fission%20en%20r%C3%A9gime%20d%27impulsions

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

A neutron detection device is housed in a metal enclosure containing a first detector with a high-sensitivity fission chamber, and a second detector having a low-sensitivity fission chamber, and a boron-lined ionization chamber compensated for gamma radiation. The detection device is useful for extended range measurement of the neutron fluence rate outside the core of a nuclear reactor.  1, record 11, English, - boron%2Dlined%20ionization%20chamber

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 CONT

A sensitive boron trifluoride ionization chamber for the detection of weak neutron sources...  1, record 12, English, - boron%20trifluoride%20ionization%20chamber

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 CONT

Fast Neutron Detection-As part of the U. S. effort to deter smuggling of special nuclear material(SNM), the DOE is developing technologies to detect illicit shipments of SNM coming into U. S. ports of entry, such as in cargo containers. To improve this capability, grant applications are sought for the development of detector systems with the ability to directly detect fast neutrons and determine their energy and direction.  1, record 13, English, - fast%20neutron%20detection

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Procédé de détection des explosifs qui décèle l'azote et l'oxygène présent dans les explosifs, permettant d'identifier les composés nitrogénés.  1, record 13, French, - d%C3%A9tection%20%C3%A0%20neutrons%20rapides

Record number: 13, Textual support number: 1 CONT

Celle-ci combine en effet deux contrôles : les bagages détectés par un bombardement "à neutrons lents" sont automatiquement présentés devant un autre système de détection, dit "à neutrons rapides".  1, record 13, French, - d%C3%A9tection%20%C3%A0%20neutrons%20rapides

Record 13,  Textual support,  Spanish